Based on what you said, you should probably be okay! The relevant rules are:
No explicit NSFW content! You can get racy, horny, gross, and weird, but no explicit gore, sex, 18+ content, or anything that would warrant your game to be marked as 18+. Keep it PG-13
No content that promotes bigotry(including but not limited to transphobia, racism, etc).
So depiction of bigotry is okay, as long as you don't promote it. In my personal opinion, depictions of bigotry can still be in poor taste even if it is acknowledged as bad, but I have no way of judging your project without seeing it. If you think it would help, you can include a disclaimer that you don't agree with the ""love interest"".